infradayTHE BUSINESS OF
INFRASTRUCTURE
Get The Wire ↗
Privately owned, engineer-led power and energy engineering firm · Power and energy engineering

Sargent & Lundy

Infraday-curated

Chicago, Illinois, United States

Engineer-owned global firm specializing in nuclear power, grids, renewables, storage and decarbonization.

Visit website ↗LinkedIn ↗Claim this profile

Overview

Sargent & Lundy is a privately owned, engineer-led firm providing power and energy engineering, design and consulting services worldwide. Founded in Chicago in 1891, the company reported 4,000 employees in December 2024. Its work spans nuclear power, electric transmission and distribution, renewable energy, storage, thermal generation, carbon capture, hydrogen, grid modernization and power systems for data centers. Services include feasibility and owner's engineering, multidisciplinary design, project and construction management, commissioning, environmental support and operations assistance. The firm remains headquartered in Chicago and plans to relocate within the Loop by July 2027.

Infrastructure sectors

Nuclear energyElectric gridsRenewable energyEnergy storageThermal generationDecarbonization
Show 1 more sectors
Data-center power

Capabilities & services

Nuclear plant design and modernization
Transmission, distribution and substations
Renewable and storage integration
Carbon capture and hydrogen
Data-center power studies
Grid planning and reliability

Engineering and designOwner's engineering and consultingProject managementConstruction managementCommissioning and operations supportEnvironmental and decarbonization services

Profile information

Infraday-curated. Claim status confirms profile management rights and does not imply independent verification.

Last editorial check: 2026-10-10.

Official source

Represent this organization?

Sign in to submit a claim using your work email. Infraday checks your affiliation before approving profile management.

Sign in to claim
Suggest a correction or request removal

Tell us what needs correcting and include an official source. Your email is private.

You’re offline. Reconnect to load the latest Infraday updates.

Additional company details

Office locations
Current headquarters: 55 E. Monroe Street, Chicago; planned move to 77 W. Wacker Drive by July 2027; global offices and project locations Source
Confirmed partnerships
L&T-Sargent & Lundy Limited joint venture with Larsen & Toubro, established in 1995 Source

Notable projects

Reports & resources

Sources and verification

Public information checked 2026-10-10. Financial and workforce figures retain their reporting periods.

  • Official Name: Source · checked 2026-10-10
  • Type: Source · checked 2026-10-10
  • Category: Source · checked 2026-10-10
  • City: Source · checked 2026-10-10
  • State: Source · checked 2026-10-10
  • Country: Source · checked 2026-10-10
  • Website: Source · checked 2026-10-10
  • Linkedin: Source · checked 2026-10-10
  • Short: Source · checked 2026-10-10
  • Sectors: Source · checked 2026-10-10
  • Services: Source · checked 2026-10-10
  • Capabilities: Source · checked 2026-10-10
  • Markets: Source · checked 2026-10-10
  • Founded: Source · checked 2026-10-10 · reporting period 1891
  • Size: Source · checked 2026-10-10 · reporting period 2024
  • Ownership: Source · checked 2026-10-10
  • Offices: Source · checked 2026-10-10
  • Partnerships: Source · checked 2026-10-10
  • Overview: Source · checked 2026-10-10
Directory analytics preference

Allow anonymous counts of profile views and link clicks for this browser session.